I bought one of these a few years ago and it has proven to be vigorous and easy to care for. My issue is it is always listed as everblooming. Mine has one huge flush in spring and then no blooms. I do have some blooms now but this is the first time. All summer it was without flowers. Any ideas why mine is not acting as everblooming. I do water regularly and the soil is pretty fertile. I haven't fertilized much yet as the bed was new and loaded with compost when I planted it.
It could be, I am not sure how to actually prune this plant. It's growing on a wrought iron fence but the canes get so long they must be trimmed back. Perhaps I do this at the wrong time? I do it after the first flush of blooms fade and I never see any buds when I am pruning.
For most climber, one can encourage more blooms by securing the canes to grow horizontally as opposed to vertically. From the photos uploaded onto Help Me Find horizontal training does look to help Peggy bloom more vigorously. Also from those photos it looks as if Peggy does slow down in summer heat. It doesn't say that in the description but it looks like one fellow from LA uploaded a photo of a gorgeously healthy Peggy Martin in the summer. No blooms present and I think he was trying to tell us something.
I have a number of climbers and ramblers. In general I've come to find that when a climber and the occasional rambler is described as everblooming, continuous blooming, or whatever they don't mean the same thing as a continous blooming shrub. They mean more like repeat blooming in flushes with the occasional appearance of a few blooms between flushes.
I've learned when pruning climbers that one removes non-productive canes every three years or so and only remove damaged or seriously crossed canes every year. Never remove more than a third of the canes any one year and correct "v's" as needed. If you follow this link: http://www.youtube.com/watch?v=fr3cTEjzrcM , you will find a whole treasure trove of youtubes from Paul Zimmerman on how to peg a rose, prune a climber, train a pillar rose, etc. He's a very good teacher. But you can't get a climber to stop growing at a certain point in the season. If you do it will sulk like my sister! And they do need more time to grow into themselve and develop their variety traits.